This. Do NOT take support as bundled into the cost-of-code contract. Have a separate maintenance/support contract, and make sure you get paid enough to deal wit

This. Do NOT take support as bundled into the cost-of-code contract. Have a separate maintenance/support contract, and make sure you get paid enough to deal with the hassle of on-going support for a product whose marketing you no longer have control over. I'd push for a high enough maintenance amount such that you can hire a few people to help with the support so it's not all on you.